If you open MS Outlook and see an error message, Outlook is using an old copy of your Outlook data file (.ost), then use ...

You may get an error prompt displaying the error message Microsoft Office cannot open this file because some parts are missing or invalid when you try to open a Word ...

Breakthroughs, discoveries, and DIY tips sent six days a week. Terms of Service and Privacy Policy. Being unable to open files as usual is one of the most frustrating ...

The problem happens for users who encrypt the email using the settings under the email File dialog (File > Encrypt), ...